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    <center>Scilab Function</center>
    <div align="right">Last update : 20/11/2006</div>
    <p>
      <b>help</b> -  on-line help command</p>
    <h3>
      <font color="blue">Calling Sequence</font>
    </h3>
    <dl>
      <dd>
        <tt>help(key)</tt>
      </dd>
      <dd>
        <tt>help</tt>
      </dd>
    </dl>
    <h3>
      <font color="blue">Parameters</font>
    </h3>
    <ul>
      <li>
        <tt>
          <b>key</b>
        </tt>: character string. Gives the help page to be found</li>
    </ul>
    <h3>
      <font color="blue">Description</font>
    </h3>
    <p>
      <tt>
        <b>help</b>
      </tt> without argument displays the hypertext  page
      containing the list of help chapters.</p>
    <p>
      <tt>
        <b>help(key)</b>
      </tt> displays the Scilab help file associated with the
      given  <tt>
        <b>key</b>
      </tt>. If no help file is found, <tt>
        <b>help(key)</b>
      </tt>
      automatically call <tt>
        <b>apropos(key)</b>
      </tt>.</p>
    <p> Scilab includes its own simple browser written in TCL/TK. It is possible to choose an other one.
    The global variable <tt>
        <b>%browsehelp</b>
      </tt> contains a string defining which browser 
      must be used: its value may be changed (or redefined in your startup files : SCIHOME/.scilab or SCIHOME/scilab.ini). Note that when you 
      enter an <tt>
        <b>help</b>
      </tt> command while <tt>
        <b>%browsehelp</b>
      </tt> contains the empty matrix
      <tt>
        <b>[]</b>
      </tt> then the different browser choice possibilities are
      displayed (so that you can enter the 2 instructions:
      <tt>
        <b>global  %browsehelp; %browsehelp=[]</b>
      </tt> for changing of browser !). 
      As generally different browsers have differents calling sequences, if
      your favorite one is not in the list you may  have to adapt the <tt>
        <b>browsehelp</b>
      </tt> scilab 
      which can be found in <tt>
        <b>SCI/macros/util/browsehelp.sci</b>
      </tt>.</p>
    <p> See  <a href="man.htm">
        <tt>
          <b>man</b>
        </tt>
      </a> for more explanation on how to write new help
      pages .</p>
    <h3>
      <font color="blue">See Also</font>
    </h3>
    <p>
      <a href="apropos.htm">
        <tt>
          <b>apropos</b>
        </tt>
      </a>,&nbsp;&nbsp;<a href="man.htm">
        <tt>
          <b>man</b>
        </tt>
      </a>,&nbsp;&nbsp;</p>
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